Since we can't hear you at the back of the
题型:单项选择题
问题:
Since we can't hear you at the back of the hall, you'll have to()your voice.
A.improve
B.increase
C.raise
D.open
Since we can't hear you at the back of the hall, you'll have to()your voice.
A.improve
B.increase
C.raise
D.open